import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    static BigInteger countArray(int n, int k, int x) {
        BigInteger ans = BigInteger.valueOf(1);
        for(int start = 0; start < n - 3; start ++)
        {
        	ans = ans.multiply(BigInteger.valueOf(k -1));
        }
        
        if (k > 2)
        	ans = ans.multiply(BigInteger.valueOf(k - 2));
        ans = ans.add(BigInteger.valueOf(1));
        return ans;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        int k = in.nextInt();
        int x = in.nextInt();
        BigInteger answer = countArray(n, k, x);
        System.out.println(answer);
        in.close();
    }
}